Thread: 21zp4a crt sub
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Old 04-04-2025, 04:27 PM
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timmy timmy is offline
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Quote:
Originally Posted by bandersen View Post
Did you check the items I listed earlier? Especially the grid drive voltage?
Is it running on frequency?
Do you have a stable image?
Swap damper and horizontal output tubes.
I tried another horizontal tube and the image is very good and stable I have no way to check frequency but if I turn the horizontal drive pot the hv will only go up alittle not enough and I get the drive line down the center of the screen and have to put it back down where it was. The grid drive voltage where do I get that from the horizontal output tube ? I’m going to swap the damper and try that. Not sure if this grid drive voltage is listed in this sams I have.I just took a look and it turns out that there is a 6ax4 damper in there but it supposed to have a 6w4 so I have a new one I’ll try.

Last edited by timmy; 04-04-2025 at 05:05 PM.
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